Navigation Links
Nitrogen -- the silent species eliminator
Date:10/12/2007

Nitrogen pollution from agriculture and fossil fuels is known to be seriously damaging grasslands in the UK. A new European study is starting to show that the effect is Europe-wide, confirming that current policies to protect ecosystems may need a re-think.

When Carly Stevens finished her PhD in 2004, her findings were so significant they were published in Science. Not only that, they were selected as contributing to one of the top ten scientific breakthroughs of that year quite something for a PhD student. Stevens had found the first evidence that nitrogen deposition from the atmosphere was depleting numbers of plant species in British grasslands. There was experimental evidence that this could happen, but we were the first to show the effect is real and happening now, says David Gowing, one of Stevens PhD supervisors at The Open University in the UK.

Stevens studied acid grasslands upland pastures with relatively infertile soils. She found that in places where more nitrogen is deposited, there are fewer plant species. The gradient was so pronounced that one species has been lost for each additional 2.5 kg of nitrogen per hectare deposited every year. Nitrogen from man-made sources, like intensive farming and cars, causes significant air pollution in the UK, and some is deposited from the air on to the land. Deposition is highest in densely-populated areas, and in Britain ranges from about 5 to 35 kg of nitrogen per hectare per year.

The approach to protecting wildlife from nitrogen pollution is to calculate critical load values for different ecosystems how much nitrogen a system can accumulate every year before damage occurs. Infertile habitats, like heathlands and bogs, are the most vulnerable. But Stevens research showed that species are being lost even where deposition is beneath the critical load for grasslands.

The species arent going extinct, Stevens stresses, but if this is happening everywhere, we are moving tow
'/>"/>

Contact: Sofia Valleley
svalleley@esf.org
33-388-762-149
European Science Foundation
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Plant hemoglobins: Oxygen handlers critical for nitrogen fixation
2. Anammox bacteria produce nitrogen gas in oceans snackbar
3. Marine bacterium suspected to play role in global carbon and nitrogen cycles
4. Higher carbon dioxide, lack of nitrogen limit plant growth
5. New method confirms importance of fungi in Arctic nitrogen cycle
6. Microbe fixes nitrogen at a blistering 92 C
7. Natures process for nitrogen fixation caught in action
8. Pesticides choke pathway for nature to produce nitrogen for crops
9. Researcher studies, treats military with silent disease
10. A silent pandemic: Industrial chemicals are impairing the brain development of children worldwide
11. New species from old data
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/10/2014)... You,ve been here before: you desperately need to ... password, site key or the answer to your secret question. ... Today, Hoyos Labs , a digital ... finally put an end to the frustration that comes with ... 1U leverages a user,s smartphone to acquire his or her ...
(Date:12/10/2014)... CIE San Diego has launched an innovative ... tissue that enhances care coordination among social service and ... information; earned a second $1 million grant from the ... aging in community and; will be recognized as a ... 4-6p. CIE San Diego today announced ...
(Date:12/5/2014)... VIEW, Calif. , Dec. 4, 2014 /PRNewswire/ ... safety has boosted investments in new testing and ... has also given rise to a range of ... by the requirements of Generation Y, which is ... technologies. As a result, product development strategies of ...
Breaking Biology News(10 mins):The Password is Finally Dead: Launch of 1U Mobile App Eliminates Need for All Usernames and Passwords 2The Password is Finally Dead: Launch of 1U Mobile App Eliminates Need for All Usernames and Passwords 3Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 2Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 3Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 4Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 2Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 3Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 4
... 12, 2009) German scientist Otto H. Warburg,s theory ... Prize in 1931, but the biochemical basis for his ... from irreversible injury to cellular respiration eventually fell out ... the cause of uncontrolled cell growth. Seventy-eight years ...
... Fla. A Mayo Clinic-led international consortium has ... and other neurological disorders. Studying just ... have discovered a genetic defect that results in ... as Perry syndrome. Although this syndrome is exceedingly ...
... 12 Industry Leaders Chosen for BOSS-UROCKVILLE, Md., Jan. 8 ... named Lockheed Martin (NYSE: LMT ) an industry ... Operations and Support Services - Unrestricted (BOSS-U) vehicle. As ... selected to participate in this indefinite delivery, indefinite quantity (ID/IQ) ...
Cached Biology News:Nearly a century later, new findings support Warburg theory of cancer 2Mayo Clinic: Brain disorder suggests common mechanism may underlie many neurodegenerative diseases 2Mayo Clinic: Brain disorder suggests common mechanism may underlie many neurodegenerative diseases 3Mayo Clinic: Brain disorder suggests common mechanism may underlie many neurodegenerative diseases 4Lockheed Martin Team Wins Role on Key Department of Defense Biometrics Contract Vehicle 2
(Date:12/24/2014)... China Biologic Products, Inc. (NASDAQ: CBPO, ... integrated plasma-based biopharmaceutical company in China ... Shandong Taibang Biological Products Co. Ltd., has received ... Food and Drug Administration (the "CFDA") for its ... in the Company,s public filings, the CFDA inspected ...
(Date:12/24/2014)... , December 23, 2014 ... Algeria , out today and available for free download ... actors driving change and growth in the sector today. ... scored notable successes has been in developing a homegrown pharmaceutical ... percent local production still remains some way off. A cursory ...
(Date:12/24/2014)... Dec. 23, 2014  Rock Creek Pharmaceuticals, Inc., (NASDAQ: ... filed a Clinical Trial Application (CTA) with the ... Agency (MHRA) seeking regulatory approval to initiate clinical trials ... Citrate. Contingent on the Company receiving CTA ... I trial to assess the safety, tolerability and dose ...
(Date:12/22/2014)... & Brussels (PRWEB) December 22, 2014 ... (CfPIE), the global leader of technical training across the ... for Clinical Data Management (SCDM) to provide the ... certification programs —providing access to the more than ... extends SCDM members with 10% off when registering for ...
Breaking Biology Technology:China Biologic Receives GMP Certification for New Coagulation Factor Facility 2China Biologic Receives GMP Certification for New Coagulation Factor Facility 3PharmaBoardroom Releases New Algeria Pharmaceuticals Report 2PharmaBoardroom Releases New Algeria Pharmaceuticals Report 3Rock Creek Pharmaceuticals Files Clinical Trial Application in the UK for Clinical Trials of Anatabine Citrate Formulations 2Rock Creek Pharmaceuticals Files Clinical Trial Application in the UK for Clinical Trials of Anatabine Citrate Formulations 3CfPIE Announces Partnership with the Society for Clinical Data Management 2CfPIE Announces Partnership with the Society for Clinical Data Management 3
... , New Vitality hrGFP expression vectors , ... Expression Vectors Employ Stable, High-Level Fluorescence , Humanized Renilla GFP Reporter , ... , ... , Stratagene , , ...
... of FLAG -Tagged Fusion Proteins ,,,,, Detection of expressed ... of FLAG -Tagged,Fusion Proteins , Qiyi ... Weiping Yang ,Stratagene , Stratagenes TagDetect FLAG ... an easy-to-use assay kit for detecting FLAG epitope-tagged fusion,proteins. To ...
... assists in detecting SNPs,quickly and easily , ... University of Colorado Health Sciences Center, ... custom molecular beacons ff, ,to detect a single ... clear discrimination among the different genotypes carried in,family members. This ...
Cached Biology Technology:New Mammalian Expression Vectors Employ Stable, High-Level Fluorescence , Humanized Renilla GFP Reporter 2New Mammalian Expression Vectors Employ Stable, High-Level Fluorescence , Humanized Renilla GFP Reporter 3New Mammalian Expression Vectors Employ Stable, High-Level Fluorescence , Humanized Renilla GFP Reporter 4New Mammalian Expression Vectors Employ Stable, High-Level Fluorescence , Humanized Renilla GFP Reporter 5New Mammalian Expression Vectors Employ Stable, High-Level Fluorescence , Humanized Renilla GFP Reporter 6New Mammalian Expression Vectors Employ Stable, High-Level Fluorescence , Humanized Renilla GFP Reporter 7Simple, Sensitive, and Rapid Detection of FLAG -Tagged,Fusion Proteins 2Simple, Sensitive, and Rapid Detection of FLAG -Tagged,Fusion Proteins 3Simple, Sensitive, and Rapid Detection of FLAG -Tagged,Fusion Proteins 4Genotyping Single Nucleotide Polymorphisms with Molecular Beacons 2Genotyping Single Nucleotide Polymorphisms with Molecular Beacons 3Genotyping Single Nucleotide Polymorphisms with Molecular Beacons 4Genotyping Single Nucleotide Polymorphisms with Molecular Beacons 5Genotyping Single Nucleotide Polymorphisms with Molecular Beacons 6
... Highly-purified, endotoxin-free plasmid DNA preparations are ... in quantities from 1mg to multi-gram ... as large-scale (100mg-multi-gram) preparations are made ... preparation is formulated according to customer ...
... Activins are polypeptide hormones which ... (TGF-) superfamily. The TGF- superfamily is ... factors which control many aspects of ... (1). Other members incude TGF-s, bone ...
... is a 96-well ELISA-compatible plate containing ... (mouse IgG 1 ) is directed ... (GST), and binds with high affinity ... in which the tag is exposed. ...
... AAIPharmas Routine Testing Laboratory (RTL) ... developed over 25 years. ,,Microbial method ... used to monitor the conditions of ... quality for manufactured products,,We offer a ...
Biology Products: